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      <a id="outiat"></a>
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      <a id="IndexOutiat" class="indexterm"></a>
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        <h2>
          <span class="refentrytitle">outiat</span>
        </h2>
        <p>outiat — 
      Sends MIDI aftertouch messages at i-rate.
          </p>
      </div>
      <div class="refsect1">
        <a id="idp130149520"></a>
        <h2>Description</h2>
        <p>
      Sends MIDI aftertouch messages at i-rate.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp130150768"></a>
        <h2>Syntax</h2>
        <pre class="synopsis"><span class="command"><strong>outiat</strong></span> ichn, ivalue, imin, imax</pre>
      </div>
      <div class="refsect1">
        <a id="idp130219344"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>ichn</em></span> -- MIDI channel number (1-16)
    </p>
        <p>
      <span class="emphasis"><em>ivalue</em></span> -- floating point value
    </p>
        <p>
      <span class="emphasis"><em>imin</em></span> -- minimum floating point value (converted in MIDI integer value 0)
    </p>
        <p>
      <span class="emphasis"><em>imax</em></span> -- maximum floating point value (converted in MIDI integer value 127 (7 bit))
    </p>
      </div>
      <div class="refsect1">
        <a id="idp130223440"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>outiat</em></span> (i-rate aftertouch output) sends aftertouch messages. It works only with MIDI instruments which recognize them. It can drive a different value of a parameter for each note currently active. 
    </p>
        <p>
      It can scale an i-value floating-point argument according to the <span class="emphasis"><em>imin</em></span> and <span class="emphasis"><em>imax</em></span> values. For example, set <span class="emphasis"><em>imin</em></span> = 1.0 and <span class="emphasis"><em>imax</em></span> = 2.0. When the <span class="emphasis"><em>ivalue</em></span> argument receives a 2.0 value, the opcode will send a 127 value to the MIDI OUT device. When the <span class="emphasis"><em>ivalue</em></span> argument receives a 1.0 value, it will send a 0 value. i-rate opcodes send their message once during instrument initialization.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp130228624"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the outiat opcode. It uses the file <a class="ulink" href="examples/outiat.csd" target="_top"><em class="citetitle">outiat.csd</em></a>.
      </p>
        <div class="example">
          <a id="idp130230480"></a>
          <p class="title">
            <strong>Example 574. Example of the outiat opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac -Q1 -M0  <span class="comment">;;;realtime audio out and midi in and out</span>
<span class="comment">;-iadc    ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o outiat.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 2

<span class="oblock">instr</span> 1

ikey <span class="opc">notnum</span> 
ivel  <span class="opc">veloc</span>

ivib <span class="op">=</span> 25		<span class="comment">;low value.</span>
<span class="opc">outiat</span> 1, ivib, 0, 127	<span class="comment">;assign aftertouch on</span>
<span class="opc">print</span> ivib		<span class="comment">;external synth for example to</span>
<span class="opc">midion</span> 1, ikey, ivel	<span class="comment">;change depth of filter modulation</span>

<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>
<span class="stamnt">f</span>0 30 			<span class="comment">;play for 30 seconds</span>

<span class="stamnt">e</span>
<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
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        <p><br class="example-break" />
    </p>
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      <div class="refsect1">
        <a id="idp130234768"></a>
        <h2>See Also</h2>
        <p>
      <a class="link" href="outic14.html" title="outic14"><em class="citetitle">outic14</em></a>, 
      <a class="link" href="outic.html" title="outic"><em class="citetitle">outic</em></a>, 
      <a class="link" href="outipat.html" title="outipat"><em class="citetitle">outipat</em></a>, 
      <a class="link" href="outipb.html" title="outipb"><em class="citetitle">outipb</em></a>, 
      <a class="link" href="outipc.html" title="outipc"><em class="citetitle">outipc</em></a>, 
      <a class="link" href="outkat.html" title="outkat"><em class="citetitle">outkat</em></a>, 
      <a class="link" href="outkc14.html" title="outkc14"><em class="citetitle">outkc14</em></a>, 
      <a class="link" href="outkc.html" title="outkc"><em class="citetitle">outkc</em></a>, 
      <a class="link" href="outkpat.html" title="outkpat"><em class="citetitle">outkpat</em></a>, 
      <a class="link" href="outkpb.html" title="outkpb"><em class="citetitle">outkpb</em></a>, 
      <a class="link" href="outkpc.html" title="outkpc"><em class="citetitle">outkpc</em></a>
    </p>
      </div>
      <div class="refsect1">
        <a id="idp130246416"></a>
        <h2>Credits</h2>
        <p>
      </p>
        <table border="0" summary="Simple list" class="simplelist">
          <tr>
            <td>Author: Gabriel Maldonado</td>
          </tr>
          <tr>
            <td>Italy</td>
          </tr>
        </table>
        <p>
    </p>
        <p>New in Csound version 3.47</p>
        <p>Thanks goes to Rasmus Ekman for pointing out the correct MIDI channel and controller number ranges.</p>
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